What is the main purpose for coolant application? Of course, among many reasons, primarily it’s for the lubrication and cooling of the cutting edge and, in addition, to help facilitate chip evacuation. REGO-FIX has launched a cost-effective and efficient attachment for the application of coolant-lubrication liquids through the tool, based on an ER collet nut, which is suitable for use on SUHNER feed drilling units.